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I have 3... HP ranges 535 from a set of C5AE medium rise heads opened ut to take 2.25 /1.73 valves with a 325 (asvertised) degree duration cam. The second set are standard, ported C5AE heads on a 427 top oiler. That engine makes 480 hp. The third is an early set of HM C1AE heads (same port configuration as the medium rise) that have been opened up to standard 2.19 /173 those head are in a box waiting to be installed on a 428 I am planning to stuff into something. The 428 will make 450 hp.
I think aluminum heads are great on new cars. I thinks aluminum heads are fantastic if you cannot find a suitable set of FE heads (cause guys like me are hording them)...
I just really like the originality of the iron heads... I mean why go with an FE at all... A 427 windsor will make 550 hp... Oh, because it isn't an FE...
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michael
A man that is young in years, may be old in hours, if he have lost no time. But that happeneth rarely. Generally, youth is like the first cogitations, not so wise as the second. For there is a youth in thoughts, as well as in ages... Sir Francis Bacon (1561-1626)
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